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A can do a piece of work n 7 days of 9 hours each and B alone can do it in 6 days of 7 hours each....

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A can do a piece of work n 7 days of 9 hours each and B alone can do it in 6 days of 7 hours each. How long will they take to do it working together 8 2/5 hours a day?

posted Mar 8, 2016 by Deepika Jain

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1 Answer

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A-63hr
B-42hr
Lcm will give total work to be done
Lcm =126
Work will be completed by both in =126/(a+b)hrs
126/5 hrs

In one day total working hours =8 2/5 or 42/5
Hence 125/5 *5/42 days=3 days ANSWER .

answer Apr 24, 2016 by Amit Kumar Pal



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